Home / 28,011.25-38,655.93-15,436

Finding the Fourth Proportional to 28,011.25, 38,655.93 and 15,436

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Solution

The fourth proportional to 28,011.25, 38,655.93 and 15,436 is: 21,301.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,011.25 : 38,655.93 = 15,436 : x
  2. Step 2: Convert to fraction form
    28,011.25/38,655.93 = 15,436/x
  3. Step 3: Cross multiply
    28,011.25x = 38,655.93 × 15,436
  4. Step 4: Simplify right side
    28,011.25x = 596,692,935.48
  5. Step 5: Solve for x
    x = 596,692,935.48/28,011.25
  6. Step 6: Final answer
    x = 21,301.90

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.